mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-30 13:38:40 +00:00
perf lock: Remove use of die and handle errors
Allows perf to clean up properly on exit. Signed-off-by: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1346005487-62961-4-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
David Ahern
Arnaldo Carvalho de Melo
parent
1e6d532238
commit
33d6aef513
@ -161,8 +161,10 @@ static struct thread_stat *thread_stat_findnew_after_first(u32 tid)
|
||||
return st;
|
||||
|
||||
st = zalloc(sizeof(struct thread_stat));
|
||||
if (!st)
|
||||
die("memory allocation failed\n");
|
||||
if (!st) {
|
||||
pr_err("memory allocation failed\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
st->tid = tid;
|
||||
INIT_LIST_HEAD(&st->seq_list);
|
||||
@ -181,8 +183,10 @@ static struct thread_stat *thread_stat_findnew_first(u32 tid)
|
||||
struct thread_stat *st;
|
||||
|
||||
st = zalloc(sizeof(struct thread_stat));
|
||||
if (!st)
|
||||
die("memory allocation failed\n");
|
||||
if (!st) {
|
||||
pr_err("memory allocation failed\n");
|
||||
return NULL;
|
||||
}
|
||||
st->tid = tid;
|
||||
INIT_LIST_HEAD(&st->seq_list);
|
||||
|
||||
@ -248,18 +252,20 @@ struct lock_key keys[] = {
|
||||
{ NULL, NULL }
|
||||
};
|
||||
|
||||
static void select_key(void)
|
||||
static int select_key(void)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; keys[i].name; i++) {
|
||||
if (!strcmp(keys[i].name, sort_key)) {
|
||||
compare = keys[i].key;
|
||||
return;
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
die("Unknown compare key:%s\n", sort_key);
|
||||
pr_err("Unknown compare key: %s\n", sort_key);
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
static void insert_to_result(struct lock_stat *st,
|
||||
@ -324,7 +330,8 @@ static struct lock_stat *lock_stat_findnew(void *addr, const char *name)
|
||||
return new;
|
||||
|
||||
alloc_failed:
|
||||
die("memory allocation failed\n");
|
||||
pr_err("memory allocation failed\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static const char *input_name;
|
||||
@ -356,16 +363,16 @@ struct trace_release_event {
|
||||
};
|
||||
|
||||
struct trace_lock_handler {
|
||||
void (*acquire_event)(struct trace_acquire_event *,
|
||||
int (*acquire_event)(struct trace_acquire_event *,
|
||||
const struct perf_sample *sample);
|
||||
|
||||
void (*acquired_event)(struct trace_acquired_event *,
|
||||
int (*acquired_event)(struct trace_acquired_event *,
|
||||
const struct perf_sample *sample);
|
||||
|
||||
void (*contended_event)(struct trace_contended_event *,
|
||||
int (*contended_event)(struct trace_contended_event *,
|
||||
const struct perf_sample *sample);
|
||||
|
||||
void (*release_event)(struct trace_release_event *,
|
||||
int (*release_event)(struct trace_release_event *,
|
||||
const struct perf_sample *sample);
|
||||
};
|
||||
|
||||
@ -379,8 +386,10 @@ static struct lock_seq_stat *get_seq(struct thread_stat *ts, void *addr)
|
||||
}
|
||||
|
||||
seq = zalloc(sizeof(struct lock_seq_stat));
|
||||
if (!seq)
|
||||
die("Not enough memory\n");
|
||||
if (!seq) {
|
||||
pr_err("memory allocation failed\n");
|
||||
return NULL;
|
||||
}
|
||||
seq->state = SEQ_STATE_UNINITIALIZED;
|
||||
seq->addr = addr;
|
||||
|
||||
@ -403,7 +412,7 @@ enum acquire_flags {
|
||||
READ_LOCK = 2,
|
||||
};
|
||||
|
||||
static void
|
||||
static int
|
||||
report_lock_acquire_event(struct trace_acquire_event *acquire_event,
|
||||
const struct perf_sample *sample)
|
||||
{
|
||||
@ -412,11 +421,18 @@ report_lock_acquire_event(struct trace_acquire_event *acquire_event,
|
||||
struct lock_seq_stat *seq;
|
||||
|
||||
ls = lock_stat_findnew(acquire_event->addr, acquire_event->name);
|
||||
if (!ls)
|
||||
return -1;
|
||||
if (ls->discard)
|
||||
return;
|
||||
return 0;
|
||||
|
||||
ts = thread_stat_findnew(sample->tid);
|
||||
if (!ts)
|
||||
return -1;
|
||||
|
||||
seq = get_seq(ts, acquire_event->addr);
|
||||
if (!seq)
|
||||
return -1;
|
||||
|
||||
switch (seq->state) {
|
||||
case SEQ_STATE_UNINITIALIZED:
|
||||
@ -461,10 +477,10 @@ broken:
|
||||
ls->nr_acquire++;
|
||||
seq->prev_event_time = sample->time;
|
||||
end:
|
||||
return;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
static int
|
||||
report_lock_acquired_event(struct trace_acquired_event *acquired_event,
|
||||
const struct perf_sample *sample)
|
||||
{
|
||||
@ -475,16 +491,23 @@ report_lock_acquired_event(struct trace_acquired_event *acquired_event,
|
||||
u64 contended_term;
|
||||
|
||||
ls = lock_stat_findnew(acquired_event->addr, acquired_event->name);
|
||||
if (!ls)
|
||||
return -1;
|
||||
if (ls->discard)
|
||||
return;
|
||||
return 0;
|
||||
|
||||
ts = thread_stat_findnew(sample->tid);
|
||||
if (!ts)
|
||||
return -1;
|
||||
|
||||
seq = get_seq(ts, acquired_event->addr);
|
||||
if (!seq)
|
||||
return -1;
|
||||
|
||||
switch (seq->state) {
|
||||
case SEQ_STATE_UNINITIALIZED:
|
||||
/* orphan event, do nothing */
|
||||
return;
|
||||
return 0;
|
||||
case SEQ_STATE_ACQUIRING:
|
||||
break;
|
||||
case SEQ_STATE_CONTENDED:
|
||||
@ -515,10 +538,10 @@ report_lock_acquired_event(struct trace_acquired_event *acquired_event,
|
||||
ls->nr_acquired++;
|
||||
seq->prev_event_time = timestamp;
|
||||
end:
|
||||
return;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
static int
|
||||
report_lock_contended_event(struct trace_contended_event *contended_event,
|
||||
const struct perf_sample *sample)
|
||||
{
|
||||
@ -527,16 +550,23 @@ report_lock_contended_event(struct trace_contended_event *contended_event,
|
||||
struct lock_seq_stat *seq;
|
||||
|
||||
ls = lock_stat_findnew(contended_event->addr, contended_event->name);
|
||||
if (!ls)
|
||||
return -1;
|
||||
if (ls->discard)
|
||||
return;
|
||||
return 0;
|
||||
|
||||
ts = thread_stat_findnew(sample->tid);
|
||||
if (!ts)
|
||||
return -1;
|
||||
|
||||
seq = get_seq(ts, contended_event->addr);
|
||||
if (!seq)
|
||||
return -1;
|
||||
|
||||
switch (seq->state) {
|
||||
case SEQ_STATE_UNINITIALIZED:
|
||||
/* orphan event, do nothing */
|
||||
return;
|
||||
return 0;
|
||||
case SEQ_STATE_ACQUIRING:
|
||||
break;
|
||||
case SEQ_STATE_RELEASED:
|
||||
@ -559,10 +589,10 @@ report_lock_contended_event(struct trace_contended_event *contended_event,
|
||||
ls->nr_contended++;
|
||||
seq->prev_event_time = sample->time;
|
||||
end:
|
||||
return;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
static int
|
||||
report_lock_release_event(struct trace_release_event *release_event,
|
||||
const struct perf_sample *sample)
|
||||
{
|
||||
@ -571,11 +601,18 @@ report_lock_release_event(struct trace_release_event *release_event,
|
||||
struct lock_seq_stat *seq;
|
||||
|
||||
ls = lock_stat_findnew(release_event->addr, release_event->name);
|
||||
if (!ls)
|
||||
return -1;
|
||||
if (ls->discard)
|
||||
return;
|
||||
return 0;
|
||||
|
||||
ts = thread_stat_findnew(sample->tid);
|
||||
if (!ts)
|
||||
return -1;
|
||||
|
||||
seq = get_seq(ts, release_event->addr);
|
||||
if (!seq)
|
||||
return -1;
|
||||
|
||||
switch (seq->state) {
|
||||
case SEQ_STATE_UNINITIALIZED:
|
||||
@ -609,7 +646,7 @@ free_seq:
|
||||
list_del(&seq->list);
|
||||
free(seq);
|
||||
end:
|
||||
return;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* lock oriented handlers */
|
||||
@ -623,13 +660,14 @@ static struct trace_lock_handler report_lock_ops = {
|
||||
|
||||
static struct trace_lock_handler *trace_handler;
|
||||
|
||||
static void perf_evsel__process_lock_acquire(struct perf_evsel *evsel,
|
||||
static int perf_evsel__process_lock_acquire(struct perf_evsel *evsel,
|
||||
struct perf_sample *sample)
|
||||
{
|
||||
struct trace_acquire_event acquire_event;
|
||||
struct event_format *event = evsel->tp_format;
|
||||
void *data = sample->raw_data;
|
||||
u64 tmp; /* this is required for casting... */
|
||||
int rc = 0;
|
||||
|
||||
tmp = raw_field_value(event, "lockdep_addr", data);
|
||||
memcpy(&acquire_event.addr, &tmp, sizeof(void *));
|
||||
@ -637,70 +675,84 @@ static void perf_evsel__process_lock_acquire(struct perf_evsel *evsel,
|
||||
acquire_event.flag = (int)raw_field_value(event, "flag", data);
|
||||
|
||||
if (trace_handler->acquire_event)
|
||||
trace_handler->acquire_event(&acquire_event, sample);
|
||||
rc = trace_handler->acquire_event(&acquire_event, sample);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static void perf_evsel__process_lock_acquired(struct perf_evsel *evsel,
|
||||
static int perf_evsel__process_lock_acquired(struct perf_evsel *evsel,
|
||||
struct perf_sample *sample)
|
||||
{
|
||||
struct trace_acquired_event acquired_event;
|
||||
struct event_format *event = evsel->tp_format;
|
||||
void *data = sample->raw_data;
|
||||
u64 tmp; /* this is required for casting... */
|
||||
int rc = 0;
|
||||
|
||||
tmp = raw_field_value(event, "lockdep_addr", data);
|
||||
memcpy(&acquired_event.addr, &tmp, sizeof(void *));
|
||||
acquired_event.name = (char *)raw_field_ptr(event, "name", data);
|
||||
|
||||
if (trace_handler->acquire_event)
|
||||
trace_handler->acquired_event(&acquired_event, sample);
|
||||
if (trace_handler->acquired_event)
|
||||
rc = trace_handler->acquired_event(&acquired_event, sample);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static void perf_evsel__process_lock_contended(struct perf_evsel *evsel,
|
||||
static int perf_evsel__process_lock_contended(struct perf_evsel *evsel,
|
||||
struct perf_sample *sample)
|
||||
{
|
||||
struct trace_contended_event contended_event;
|
||||
struct event_format *event = evsel->tp_format;
|
||||
void *data = sample->raw_data;
|
||||
u64 tmp; /* this is required for casting... */
|
||||
int rc = 0;
|
||||
|
||||
tmp = raw_field_value(event, "lockdep_addr", data);
|
||||
memcpy(&contended_event.addr, &tmp, sizeof(void *));
|
||||
contended_event.name = (char *)raw_field_ptr(event, "name", data);
|
||||
|
||||
if (trace_handler->acquire_event)
|
||||
trace_handler->contended_event(&contended_event, sample);
|
||||
if (trace_handler->contended_event)
|
||||
rc = trace_handler->contended_event(&contended_event, sample);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static void perf_evsel__process_lock_release(struct perf_evsel *evsel,
|
||||
static int perf_evsel__process_lock_release(struct perf_evsel *evsel,
|
||||
struct perf_sample *sample)
|
||||
{
|
||||
struct trace_release_event release_event;
|
||||
struct event_format *event = evsel->tp_format;
|
||||
void *data = sample->raw_data;
|
||||
u64 tmp; /* this is required for casting... */
|
||||
int rc = 0;
|
||||
|
||||
tmp = raw_field_value(event, "lockdep_addr", data);
|
||||
memcpy(&release_event.addr, &tmp, sizeof(void *));
|
||||
release_event.name = (char *)raw_field_ptr(event, "name", data);
|
||||
|
||||
if (trace_handler->acquire_event)
|
||||
trace_handler->release_event(&release_event, sample);
|
||||
if (trace_handler->release_event)
|
||||
rc = trace_handler->release_event(&release_event, sample);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static void perf_evsel__process_lock_event(struct perf_evsel *evsel,
|
||||
static int perf_evsel__process_lock_event(struct perf_evsel *evsel,
|
||||
struct perf_sample *sample)
|
||||
{
|
||||
struct event_format *event = evsel->tp_format;
|
||||
int rc = 0;
|
||||
|
||||
if (!strcmp(event->name, "lock_acquire"))
|
||||
perf_evsel__process_lock_acquire(evsel, sample);
|
||||
rc = perf_evsel__process_lock_acquire(evsel, sample);
|
||||
if (!strcmp(event->name, "lock_acquired"))
|
||||
perf_evsel__process_lock_acquired(evsel, sample);
|
||||
rc = perf_evsel__process_lock_acquired(evsel, sample);
|
||||
if (!strcmp(event->name, "lock_contended"))
|
||||
perf_evsel__process_lock_contended(evsel, sample);
|
||||
rc = perf_evsel__process_lock_contended(evsel, sample);
|
||||
if (!strcmp(event->name, "lock_release"))
|
||||
perf_evsel__process_lock_release(evsel, sample);
|
||||
rc = perf_evsel__process_lock_release(evsel, sample);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static void print_bad_events(int bad, int total)
|
||||
@ -802,14 +854,20 @@ static void dump_map(void)
|
||||
}
|
||||
}
|
||||
|
||||
static void dump_info(void)
|
||||
static int dump_info(void)
|
||||
{
|
||||
int rc = 0;
|
||||
|
||||
if (info_threads)
|
||||
dump_threads();
|
||||
else if (info_map)
|
||||
dump_map();
|
||||
else
|
||||
die("Unknown type of information\n");
|
||||
else {
|
||||
rc = -1;
|
||||
pr_err("Unknown type of information\n");
|
||||
}
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int process_sample_event(struct perf_tool *tool __used,
|
||||
@ -826,8 +884,7 @@ static int process_sample_event(struct perf_tool *tool __used,
|
||||
return -1;
|
||||
}
|
||||
|
||||
perf_evsel__process_lock_event(evsel, sample);
|
||||
return 0;
|
||||
return perf_evsel__process_lock_event(evsel, sample);
|
||||
}
|
||||
|
||||
static struct perf_tool eops = {
|
||||
@ -839,8 +896,10 @@ static struct perf_tool eops = {
|
||||
static int read_events(void)
|
||||
{
|
||||
session = perf_session__new(input_name, O_RDONLY, 0, false, &eops);
|
||||
if (!session)
|
||||
die("Initializing perf session failed\n");
|
||||
if (!session) {
|
||||
pr_err("Initializing perf session failed\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
return perf_session__process_events(session, &eops);
|
||||
}
|
||||
@ -857,13 +916,18 @@ static void sort_result(void)
|
||||
}
|
||||
}
|
||||
|
||||
static void __cmd_report(void)
|
||||
static int __cmd_report(void)
|
||||
{
|
||||
setup_pager();
|
||||
select_key();
|
||||
read_events();
|
||||
|
||||
if ((select_key() != 0) ||
|
||||
(read_events() != 0))
|
||||
return -1;
|
||||
|
||||
sort_result();
|
||||
print_result();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const char * const report_usage[] = {
|
||||
@ -959,6 +1023,7 @@ static int __cmd_record(int argc, const char **argv)
|
||||
int cmd_lock(int argc, const char **argv, const char *prefix __used)
|
||||
{
|
||||
unsigned int i;
|
||||
int rc = 0;
|
||||
|
||||
symbol__init();
|
||||
for (i = 0; i < LOCKHASH_SIZE; i++)
|
||||
@ -993,11 +1058,13 @@ int cmd_lock(int argc, const char **argv, const char *prefix __used)
|
||||
/* recycling report_lock_ops */
|
||||
trace_handler = &report_lock_ops;
|
||||
setup_pager();
|
||||
read_events();
|
||||
dump_info();
|
||||
if (read_events() != 0)
|
||||
rc = -1;
|
||||
else
|
||||
rc = dump_info();
|
||||
} else {
|
||||
usage_with_options(lock_usage, lock_options);
|
||||
}
|
||||
|
||||
return 0;
|
||||
return rc;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user